I've been doing lots of reading and have found a nice free PHP script that sniffs phones. I guess I also need to learn XHTML. I know how to code in HTML well enough for simple sites.
On one forum, a couple of folks addressed problems with using m.example.com and suggested example.com/mobile. Something at the back of my brain is whispering "caution" .. not sure why.
I guess that duplicate content issues are bothering me.
One of my concerns, not having a smartphone myself, is how difficult it might be to design site navigation .. no mouse .. how big are the buttons? I don't think the emulators can help in this respect.
Finding a good in-depth discussion list for smartphone design has so far eluded me. Suggestions appreciated.